A new triterpenoid 2alpha,3beta,21beta,23,28-penta hydroxyl 12-oleanene and two known compounds were isolated from the roots of Laportea crenulata Gaud. The structures of all compounds were elucidated on the basis of various spectroscopic data. The two known compounds beta-sitosterol and beta-sitosterol 3-beta-D-glucopyranoside are also the first report of isolation from this plant. The antifungal activity of new triterpenoid was studied against Aspergillus flavus, Aspergillus niger, Candida albicans, and Rhizopus aurizae, and compared with the activity of nystatin (30 microg disc(-1)). This compound has shown moderate activity against tested fungi.

Download full-text PDF

Source
http://dx.doi.org/10.1080/14786410701371470DOI Listing

Publication Analysis

Top Keywords

roots laportea
8
laportea crenulata
8
antifungal activity
8
activity triterpenoid
8
triterpenoid roots
4
crenulata antifungal
4
activity
4
triterpenoid 2alpha3beta21beta2328-penta
4
2alpha3beta21beta2328-penta hydroxyl
4
hydroxyl 12-oleanene
4

Similar Publications

The GC and GC/MS analysis of the essential oil samples obtained separately from whole aerial parts and the roots of resulted in the identification of a total of 40 compounds from the whole aerial parts and 45 compounds from the roots representing 89.7% and 82.9%, respectively, of the total essential oil composition.

View Article and Find Full Text PDF

Background: Tribolium castaneum (Herbst) is a major pest of stored grain-based products, and cause severe damage to cereal grains throughout the world. The present investigation was aimed to determine the pesticidal and pest repellent activities of 2α,3β,21β,23,28-penta hydroxyl 12-oleanene against T. castaneum.

View Article and Find Full Text PDF

Objective: To investigate the preparation process of total coumarins from Laportea bulbifera.

Methods: The optimum condition for the extraction of total coumarins was studied using the orthogonal test, and the extracts was purled with different kinds of macroporous resins. The content of total coumarins was detected by ultraviolet spectrophotometry.

View Article and Find Full Text PDF

[Studies on the chemical constituents of Laportea bulbifera].

Zhong Yao Cai

February 2011

The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, China.

Objective: To study the chemical constituents of Laportea bulbifera.

Methods: 70% EtOH was used for constituent extraction, silica gel column chromatography for constituent seperation, physical and chemical properties together with spectroscopic methods for chemical structure identification.

Results: six compounds were obtained from root of L.

View Article and Find Full Text PDF

Antimicrobial and cytotoxic activities of Laportea crenulata.

Fitoterapia

December 2008

Phytochemistry Research Laboratories, Department of Pharmacy, University of Rajshahi, Rajshahi-6205, Bangladesh.

Crude extracts and 2alpha,3beta,21beta,24beta,28-pentahydroxy-olean-12-ene (1) obtained from the root of Laportea crenulata exhibited remarkable antibacterial activities against both Gram (+) and Gram (-) bacteria. The antifungal activities of crude extracts and compound (1) were also determined. The cytotoxic activities of crude extracts and compound (1) were observed by brine shrimp bioassay and LC(50) value of the compound (1) was found to be 27.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!